Calculating machine



1,491,167 A. F. POOLE CALGULATING MACHINE 1922 2 Sheets-Sheet l Filed July. 6y

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A. F. POOLE CALCULATING MACHINE Filed July el 1922 2 sheets-sheet 2 wmv E E EEE awww-j.

Patented Apr. 22,' 1924. UNlTED STATES 1,491,167 PATENTk OFFICE.

ARTHUR F. POOLE, OF PELHAM MANOR, NEW YORK, ASSIGNOR TO; REMINGTON AC- COUNTING MACHINE CORPORATION, OF NEW YORK, N. Y.,'A CORPORATION 0F NEW YORK.

Application med July 6,

. To all'whom it may concern:

Be it known that I, ARTHUR F. POOLE, citizen of the United States, and resident of Pelham Manor, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Calculating Machines, of which the follow- .ingY is a specification. his invention relates to calculating machines and es ecially to combined typewriting and vcalcu ating machines which contain clearance proof mechanism.

, The principal object of the invention is to improve clearance proof mechanism that is described and claimed in my application filed April 19, 1921 and bearing Serial No. 462,628. The invention set forth in that application includes, among other things, means for printing and registering numbers according to a special program, and clearance proof mechanism that is brought into action automatically at a predetermined point in said program.

To those skilled 1n the art, and aided by Pat/entl No. 1,270,471 granted June 25, 1918, to assignee of J. C. Wahl, full knowledge of this invention will be imparted by the following descri tion and accompanying drawings, althougl the drawings show only a 80 small art of the machine which that patent descri In these drawings,

yFigure 1 is a diagrammatic front elevation of mechanism comprised in a Remington accounting machine that embodies the invention; i' 1 Figure 2, a right side and sectional elevation of a fragment of the machine;

:Figure 3, a sectional plan of another frag- 40 ment;

Figure 4, al skeletonized pers ectve of mechanism partly illustrated in ig. 1;-

Figure 5, a front elevation of some of the mechanism shown in Fig. 1 but on a larger 4a scale than Fig. 1; f

Figure 6, a perspective of devices shown in the upper part of Fig. 5; and

-Figure 7, an enlarged sectional plan of one of those devices.

Similar reference numerals designate like parts in diierent views.

The drawings represent the invention in a form in which it 1s embodied in combined typewritingI and calculating machines, such II as are known as Remington-Wahl cross foot- CALCULATING MACHINE.

1922. Serial N0. 573,111.

ing or Remington accounting machines. The construction and operation of such machines, not including clearance proof mechanism, is explained in the above mentioned Patent 1,270,471, to which reference is made for a description of any mechanism which these drawings do not show and which Remington-Wahl machines include, or any mechamsm which is particularly referred to and not fully illustrated herein. It will be understood that the invention claimed herein may be adapted and a plied to different forms of calculating machines.

The platen 1, type bars 2, and keys 3, conventionally shown in Fig. 1, are well known parts of the Remington typewriting machine, which the Remington-Wahl machine includes. The numeral keys are connected with the actuator of the calculating mechanism by links 4 and other links in 'rear of links 4 connect the keys with the type bars ofthe typewriter. The bar 5 is part of the Stationary framework of the Wahl mechanism, this bar being a casting which is fast on the framework of the typewriter. The plates 6 and 7 and the block 8 (Figs. 1 and 2) are parts of the framework of the crossfooting mechanism. Plate 6 is attached by screws at its upper end to the right end of bar.5, plate 7 1s attached to plate 6 and to another part of the framework, and block 8, which 1s a casting, fits between and is fastened to plates 6 and 7. The screw 9 (Fig. 2) is one of the fastenings. It passes through an ear on block 8 and thence into platev A typical instance of a set-u of the Remington accounting machine inc udes two vertical totalizers 10 and 11, and two dummies 12. and 13, mountedon the decimal car-l riage or truckl which is supported by rolls at the middle of the machine and connected with and partly supported at its ends by the -ty ewriter carriage, and which travels towards the left and towards the ri ht with the typewriter carriage. These ummies do not contain computing mechanism, each consisting merely of the framework of a totalizer, but they perform important functions which a'ect the actions of the cross totalizer. These functions would also be performed by complete totalizers which might be substituted for the dummies. n

Each of these totalizers and dummies is secured on the truck by means which is well known, and which is described in said Wahl patent. Each of the totalizers is' of the orinary Wahl construction, and is adapted to be actuated by themain master wheel of the machine when motion is imparted to this master wheel from the numeral keys 3 and through the links 4 and other devices, as explained in the Wahl patent. The decimal scale 14 on each totalizer or dummy and the pointer 15 (Flgs. 1 and 3) coact in the operation of the machine in a well known manner. This pointer is attached to the bracket 16, which is fast on bar 5 about midway between its ends.

The truck 17 is the cross-footing carriage which is mounted on block 8 and travels on the ball bearings 18, and to which is connected the long tension coil spring 19 that runs over a pulley and draws the carriage towards the right when it is allowed to move in that direction.

The analizar 2o (Figs. 1, 2 and 5) is 'the cross-footing jumping totalizer mounted on truck 17 and arranged to be operated by the cross-footing actuator comprising the master wheel 21 (Fig. 2).

In the operation of the machine, the truck 17, which normally stands at the right end of its path of travel, is picked up at times by the vertical totalizers and dummies by means of the hook 22, pivoted at 23 on bracket 24 fast on the truck 17. This hook engages a lug, such as lug 25 (Fig. 4), formed on the right side plate of each vertical totalizer and dummy. As a number is written and calculated, truck 17 is drawn toward the left until the last carrying wheel 26 is engaged with master wheel 21, and at the next step of the carriage hook 22 is disconnected from the lug, whereupon the cross-footing truck is drawn to the right by spring 19, the adjustable stop bar 27 on said truck striking lever 28 as the totalizer reaches normal position and forcing the lever against frame plate 6. This lever is pivoted at 29 to an ear on plate 6, and spring 30 tends to swing the lever to the left. Slide link 31, through which lever 28 passes, is movable by this lever a Short distance to the left or right in guides formed in the framework. When this link 0r slide is moved it rocks bell crank 32. pivoted at 33 to the framework and supporting at its left end theblocking device 34 pivoted to the bell crank at 35 and hanging close to the front end of fixed stud 36 having the longitudinal slot 37 in its under side. The construction is'such that when lever 28 is in the position shown in Fig. 1, to which position it is turned by spring 30, the lower end of blocking plate 34 is above slot 37, and when the lever is in contact with plate 6, the lower end of plate 34 is about even with the under side of stud 36. The swinglng or angular movement of plate 34 on its pivot 35 is controlled through pin 38 by link 39 pivoted at 4() to the depending arm of swinging frame 41, pivoted on rock shaft 42, which is journaled in the framework. The frame 41 has roller 43 on the arm which extends to the left from shaft 42, which roller is normally held in an upper position by means of the spring 44 but is adapted to be depressed, when a vertical totalizer or dummy", is over the master wheel, by the track or rail 45 mounted in the casing of said totalizer or dummy (Fig. 4). Such a track or rail is more plainly shown in the side view of the cross totalizer (Fig. 2), which is like each of the vertical totalizers plus clearance proof mechanism. The whole construction is such that when there is no vertical totalizer or dummy over the main master wheel then plate 34 has been swung so far to the left as not to be able to cover slot 37 in post 36, but when a vertical totalizer or dummy passes over the master wheel then said plate is swung to the right far enough to enable it to cover the slot when the plate is in its lowest position. This is well known locking mechanism used in the Remington-Vahl machine and described in said )Vahl patent. It will be perceived that it is so constructed that plate 34 cannot close the'end of slot 37 except (1) when a vertical totalizer or dummy is over the main master wheel, and (2) when lever 28 is in its right-hand position, so that it requires a combination of two conditions to cause said plate to block up said slot.

Each of the links 4, when the key to which it is connected is struck, actuates or tends to actuate a device sometimes called a fan, which is adapted to Vengage the universal bar 46, consisting of a roller mounted in arms fast on the universal rock shaft 47, on which the arm 48 also is fast. The universal bar when it is moved by the fan is swung towards the front of the machine so that shaft 47 is rocked and a backward angular movement is imparted to arm 48.

`This arm always moves into slot 37, except when, under the above mentioned combination of conditions, the slot is' blocked by plate 34. Then shaft 47, universal bar 46, the fans, keys and other devices all are locked. and the machine cannot be operated thereafter until plate 34 shall have been withdrawn from in front of slot 37. The described lock is a well known'part of the Remington-Wahl machine, and it is convenient to use it in connection with my improved clearance proof mechanism, but it is to be understood that other means for locking an essential part of the machine might be substituted for it.

In the manufactured Remington-Wahl machine and that described in said patent, the rock shaft 42 has the arm 49 fast thereon and projecting leftward therefrom and lll lll

carrying the roller 50 adapted to co-o erate occupies its lowest position said master wheel is connected up for subtraction, and when the arm occupies an intermediate psition the master wheel 21 is not so connected to the rest of the actuating mechanism as to enable the cross footer to be operated. This arm therefore has a normal elevated position in which the cross footer is set for addition, a middle position 1n which said cross footer is disconnected, and a lowest -position in whichthe cross footer is set for subtraction. The details of this automatic control of the state of the cro footing actuator are fully disclosed in the patent above referred to.

The machine canv be set in various ways to perform over and over again a regular program of writing' and calculation. Fig. 1 diagrammatically shows one .instance of such a setting. The program here to be considered -is that of making daily entries on ledger sheets which customarily consist of leaves in a yloose-leaf book. According to this program the items written in one da are contained`in four column positions: de tor, creditor, balance and old balance or pick-up-balance, said columns occurring on the. paper in the order named and corresponding respectivel to totalizers and 11 and dummies 12 an 13. In using the machine when a ledger sheet is .put into it around the platen 1, the first o ration is to write the old or pick-up-ba ance in the fourth column. Usuall this is writtenlon the same line as the ol balance which had been written in the third column at the next preceding operation on that particular ledger sheet.l The operator, therefore, when the paper is put into the machine, turns the platen l to bring the last written line to the writing line and in column 4 copies the balance seen just to the left of it in column 3. The paper is then line-spaced and the carriage drawn back to begin a new line of writing. The debtor item is then written in column 1, andthe creditor item in column 2, and the resulting balance is then written in column 3, and this is the end of the program. If there is more than one debtor or creditor item to be entered, the paper is line spaced and the second item written under the first, but "in every case the writing of the new balance in column 3 is the last operation on that particular ysheet at that particular time. This sheet is then removed from the machine, another sheet is inserted and the program is repeated. In Fig. l the parts are shown in position for writing the digit .of lowest order in the third column, and the next key-stroke, to write said digit, will end the program. This last key-stroke will cause the carriage to step one space to the left, and the cross-totalizer to be freed and allowed to snap back to its extreme right-` hand position, or at least as far as dummy 13 will allow Lit to go. When the next 1ledger sheet is put into themachine the carriage is already in position to allow the operator to copy in the pick-up balance for that sheet.

In the program described the calculation of the new balance is effected on the cross totalizer 20, and this `is accomplished by causing the pick-up-balance Written in column 4 to be added into the cross totalizer, and the debtor item or items written in column 1 to be-also added in the cross totalizer, and the creditor item or items written in column 2 to be subtracted in the cross-totalizer. At thisv time the crosstotalizer will show the new balance, and if the cross-totalizer is set for subtraction when the new balanceI is being copied in column 3, the copying of said new balance, if correctly done, will bring said crosstotalizer to zero. In this program, therey fore', the cross-totalizer should always stand at zero when it is freed for its jump tothe right by the next key-stroke made when the parts are in the positions shown in Fig. 1.

In order to cause the numbersto be automaticall added and subtracted as described subtraction cam plates 51 lare placed on to-` talizer 11 and dummy 12, but such a cam plate is not put on totalizer 10 or dummy 13. It will be observed lthat as far as carrying out this program is concerned totalizers 10 and 11 could also be dummies if preferred, but it is sometimes useful to preserve the grand tota-l of all debtor items and of all creditor items and the first two,V columns have, therefore, been defined by totalizers rather than by dummies In some instances totalizers are used instead of the dummies 12 and 13, as the totals indicated at the end of the daycan sometimes be used in checking up the work.

I have provided clearance proof mechanism with meansfor bringing it into koperation automatically by the last key stroke in the program, this being the point in` the program at which. the cross totalizer should always be clear. In the present instance said clearance roof mechanism is brought into operation y the next step of the carria from the position indicated in Fig. 1. it this same step the hook 22 will be released from the dummy 12 and the cross-totalizer will jump b ack to the right impelled by its spring 19. l

A sheet metal plate 52 is secured on top ioo of the casting 5 by screws at 53, one of said screws being at the right and the other at the left of the bracket 16. J ust at the right of said bracket 16 the plate 52 has bent upward therefrom a bracket comprising an upst-anding part 54 and a forwardly extending horizontal part 55. A headed stud 56, riveted to the part 55 from the under side thereof, serves as a pivot for a bell crank having an upper leftward extending arm 57 and ,a lower rearward extending arm 58, the sheet metal of which the bell crank is constructed being bent as shown so as to pivot on the stud 56 at two points spaced apart. In order to accommodate the rearward arm 58 an opening 60 is cut in the bracket 54, one wall of said opening serving to limit the motion of the arm 58 toward the left. Said arm is drawn toward the left by means of a spring 61 connected to a fixed stud 62. A dog 63 is pivoted at 64 to the free end of the arm 57 and said dog has an arm 65 which is connected by means of a spring 66 with an ear 67 of the bell crank 57, 58, said spring tending to turn the foreward projecting end of the dog toward the left. The motion of said dog in that direction relative to the arm 57 is limited by a pin 68 projecting from the dog in position to strike the arm 57. The forward end of said dog 63 is formed with a bevel 70 which, when the parts stand in the positions above described, as the last digit of the new balance is written, is engaged or about to be engaged b v a trip 71 consisting of a cam made on the right-hand end of bar 72 secured to the top of the casing of dummy 12 by two screws of which one may be the pivot screw of the spring latch locking loop of the dummy. The construction is such that when the lcarriage takes its next step beyond the position indicated in Figs. 1 and 3, the bell crank 57, 58 will be rocked in a clockwise direction (Fig. 3) moving the arm 58 toward the right. During this same step of the carriage the cam 71 escapes from the dog 63 and allows said bell crank to be restored to its normal position by its spring 61, so that the motion of the arm 58 consists of a quick motion to the right and b ack again. After the cam 71 has escaped from the dog 63 and the carriage is drawn back toward the right to begin a new line, said cam, when it strikes said dog, does not rock the bell crank 57, 58 but only rocks the dog 63 about its pivot 64, and it is for this reason that the camsurface 70 is made on said pivoted dog instead of being formed on a rigid part of the bell crank.

Connected to the free end of the arm 58 of said bell crank is a push wire 73 which extends nearly to the right-hand side of the machine where its free end is guided in an opening in an ear 74 in a sheet metal bracket 75 bent up as shown in Figs. 1, 4, 5 and 6, and having in it two holes 76 (Figs. 6 and i 4)- The part of said bracket that contains All of the mechanism above described is` also shown and described in my aforesaid application, Sr. No. 462,628. The herein described improvement made by me on the invention set fort-h in that ap lication is contained in the novel bell cran presently to be described, and means which coacts therewith and is included with it in the clearance proof mechanism or combined clearance proof and locking mechanism. l

The body of this bell crank, which is sometimes called the lock lever cam of the Remington accounting machine, is preferably a piece of sheet metal cut from a fiat blank and bent as shown, but it might be a casting or forging. It has the arms 79, 8O and .81

and is pivotally attached to the ear 82 of bracket 75 by a stud 83 passing through a hub fast on the bell crank. Arm includes the rearwardly extending part 84 in which is the open slot 85, and in this slot tongue 86 of bracket 75 fits loosely so that when the bell crank is rocked arm 80 is guided at" its left end by this tongue. The rearwardl extending lug 87, on arm 81 at its u r en projects over the horizontal arm o atch 77 on which arm of the latch near its right end is the shoulder 88, and when the latch and bell crank are in their normal positions, lug 87 is in contact with this shoulder and prevented by it from moving to the left. The spring 89 attached to arm 81 and to lug W0 on the latch tends both to pull the upper end of arm 81 to the left and to move the shoulder of the latch upward. Arm'79 has the off-set part 91 at its lower end and this part crosses and passes in front of lever 28 at its upper end, and has on it the rearwardly extending lug 92 and the finger piece 93. Lever 28 is kept by spring 30 in contact with lug 92 which crosses the left edge of the lever, except that the lever is forced from the lug by stop bar 27 whenever the cross truck returns to its normal position while latch 77 engages lug 87 of the bell crank.

To arm 80 is axed the cam bar 94 which has at its left end the inclined edge 95. Between this bar and arm 80 are spacing blocks 96 into which pass the fastening screws 97 that also pass through arm 80, the blocks being reduced at their front ends and the reduced parts extending through the bar and being upset in depressions in its front face so that they do not roject from that face. Obviously the bar and) arm might be fastened together in some other way but the fastenings should not project from the front face of the bar. The perforated ear 98 and the I pivoted toit at 101. y That portion of the bar with which said finger makes contact is at the left end of bar 100 and consists of thev downwardly and backward dextending parts 102 and-103 of an arm bent from the stock that forms bar 100, the right end of part 102v bein slightly wider than the left. Part 103, whic is triangular or about so in shape, has the meeting edges 104 and 105 shown in Figs. 2 and 6 and indicated by dotted lines in Fig. 7. These edges meet, when the guide is in its normal position on cam bar 94, alittle below and in front of the place on edge 95 of the cam bar where that edge is cut by the vertical plane that contains the line of inter section or common points of edges 104 and 105 (see Figs. 6, 7 and 2). The lug 106 (Figs. 1, 4, 5 and 7) formed on guide bar 100 extends downward between cam bar 94 and arm 80 of the bell crank and forms a stop that acts on bar 94 and arm 80 to limit angular movements of bar 100 on its pivot 101. )Vhen the guide is in its normal position Von the cam bar, lug 106 is held in contact with arm 80 by spring 107 attached to lug 98 and to lug 108 formed on bar 100.

If wire 73 is pushed toward the right when latch 77 engages lug 87 of bell crank arm 81 as described, the shoulder of the latch is moved downward and out of engagement with that lug, and arm 81 moves to the left so that the bell crank takes the position shown in Fig. .5. The bell crank would so move,- it will be seen, at the next stepof the carriage from the position indicated in Fig. 1. Whenever the bell crank somoves, lever .28 is forced by lug 92 to the locking position of the lever, which then makes'contact with plate 6 of the framework, but when the bell crank is iii its normal position as shown in Fig. 1, lu 92 allows lever 28 also to assume -its norma position. It will be understood,

therefore, that when the bell crank is tripped or. released from latch 77 by the stepping of the dummy 12 to its sub-units position, or that next below its units position, the described locking mechanism will be thrown in and will Aprevent further operation of the machine in calculating. N In other words, it will prevent continuation or repetition ofthe program of operation of the machine.

Means are provided to immediatelyv releasev the lock in casethe cross totalizerA 20-stands at zero. In the cross-totalizer (,Fig. 2) each carrying wheel 26 meshes with an ldler pinion 109 which meshes with a pinion. 110 on the'side ofthe corresponding dial 111. Each of the pinions 110 has one short tooth 112 which, when the dial 111 stands at zero, occupies the position shown in Fig. 2. An arbor or rocking device 113 extends through the totalizer and at its'ends has trunnions which are pivoted in the side plates of the totalizer. This rocking device is in the form of a comb, also called a feeler, comprising a series of feeler fingers 114. I have not illustrated this feeler comb in detail'because it is a well known construction, an instance of it being shown for example in my patent No.

1,311,710 dated July 29, 1919. The construction is such that if all of the wheels of the `totalizer stand at zero then the fingers 114 can occupy the forward position shown in Fig. 2, but if any one of said wheels does not stand at zero then said wheel will have a full length tooth thereon in front of a finger 114 and said rocking device will be forced to occupy a position in the rear of that shown in the drawing. A lever 115 is mounted on the rocking device 113 to which it is rigidly connected by a dowel pin 116. said lever being l at the extreme right-hand side of the totalizer just inside the frame plate. At' its rear end the lever 115 has a tooth 117 which enters a crotch in the forward end of an arm '118 of a bell crank which has an' upwardly has at its upper end the finger 120. The bell crank 118-119 is pivoted on a frame rod 121 constituting a well-known part of the Wahl totalizer. f

The above mentioned application shows a tension spring that presses the feeler against the pinions, or against'one or more of them, and an important object of this invention is to relieve the pinions of friction engendered bythe action of such s ring. In machines to which this invention 1s applied he. feeler or comb, normally, either but light y touches a pinion or pinions, or is out of contact with every one of them, so that little, if any, friction is caused by the action of` the feeler on the pinions when any dial is turned.V

Whenever the totalizer is clear, arm 119A may stand in or be moved to the position shown in Fig. 2, and when it is in that position a vertical plane passed through cam bar 94 from end to' endv and aral el to its faces cuts finger 120 lengthwise (see Fig. 7 )L If, however", the totalizer is not clear finger 120 is in front of. that plane and cannot move back to it, for such movement would be prevented by the action' on the feeler of the pinion or pinions lof the uncleared dial or dials. The forwardl position of finger 120, or lthat in .which it stands` when the totalizer is not clear, is indicated. by dotted lines in Figs. 2 and 7. Cam plate los 94 is above the horizontal plane that contains the top of linger 120 when the lock lever cam or bell crank is in its normali osition, but when that device is in the lockin position shown in Fig. 5, then ed 95 0 cam bar 94, or ed e 104 of the gui e pivotally mounted on hat bar, is in the path of linger 120, as the jumping totalizer travels to the right from the place where it is released from a column totalizer or dummy. As dummy 12 steps to sub-units position at the end of a clearin operation, included in the above explaine program, the lock lever cam is tripped and the cross totalizer snaps back as before explained. If the totalizer is clear and finger 120 is in the position indicated by dotted lines in Figs.

,2 and 7, this finger strikes edge 104 of guide 100, 102, 103 and is guided backward thereby until it passes under ed 95 of the cam bar, and this it does a little fore it reaches the place where edges 104 and 105 of the guide meet. Hence as linger 120 passes that place, the totalizer being clear, this linger is under edge 9 5 of the cam bar whether the linger was or was not in the position in which it is shown in full lines in Figs. 2 and 7 at the beginning of the jumping movement of the cross totalizer. Then this finger, acting on edge 95 of the cam bar,

raises. that bar and thus turns the lock lever.

cam unt-il it is restored to its normal osition and is there caught and held by atch Consequently if the totalizeris clear, mechanism' set, as the totalizer starts to jump, so that if the totalizer were not clear the machine would be locked, is released from the restraint during the jump of the totalizer. 'l

But ir" on the other hand, the totalizer is not clear, so that linger 120 cannot stand in or be guided to the `position which would enable it to strike edge'95 of cam bar 94,

master wheel.

Should the cross totalizer be picked up by :olumn totalizer or dummy and drawn by it to the left whilethe lock lever cam is in its locking position as shown in Fig. 5, linger 120 would act on edge 105 of guide 100, 102, 103 and, forcing the guide to yield, would pass between its guiding edges and cam bar 94, so that the lock lever cam would remain in that position ready to coact with a column totalizer or dummy in' locking the totalizer could be ope machine before any dial of the cross rated.

Immediatel after guide 100, 102 and 103 is forced asi e by finger 120 traveling in either direction, as described, spring 107 restores the guide to its normal position on the cam bar.

For reasons well understood by those skilled in the art, the wheels of the lVahlIk totalizer when brought to zero position are not always exactly aligned in that position, and it may therefore be necessary for the comb teeth 114 to exert an aligning action on said wheels by co-operation with the pinion teeth next adjacent the short teeth 112. Where, as in myV prior application, Sr. No. 462,628, the feeler comb is constantly pressed against the pinions by a spring, it is necessary to make said spring stron enough to have the aligning action referred In the present invention the pressure is derived from the spring 107 and it is exerted only for an instant and only at the instant when fit is needed and when the wheels are not being turned by the master wheel. It is therefore practicable to make said spring 107 stronger than would be desirable if it exerted its pressure on the comb at the time when the totalizer was being operated. Moreover, inthe present invention, the comby and its connected parts are operated by a quick movement against the wheels, which has a better aligning action than the pressure of a continuously actin spring. My prior application tiled Apri 15, 1921, Sr. No. 492,396, discloses a form of clearance proof mechanism in which the feeler comb is normally free of spring pressure and in which the ressure of a spring extraneous to the tota izer is brought to bear on said comb momentarily during and by reason of the jump back of the crosstruck, and said application contains claims to that construction broader than the claims in this present application.

To aid in properly locating guiding tongue 86 of bracket 75, so as to force cam bar 94 always to travel in its true path, as well as to prevent it from springing when finger 120 acts on the guide as described, bracket may be provided with the forwardly extending part 122 which is held tight against the back of fixed bar 5 tol which the bracket is attached.

It will be perceived that ata definite point in the program the lock is always made effective and that it is kept so if the crosstotalizer is not clear, but immediately is automatically disabled if that totalizer is clear. The construction is such that if the operator fails to copy the total correctly the machine will be locked up against a continuation or repetition of the program, but if the total is copied correctly then there will be no interruption at all in the operation of s' when clearance is not proved as when it is the machine, which may go oniexactly as if the clearance proof mechanism were notmechanism of a totalizer to the extra work` and stress imposed on it by such pressure. Therefore this improvement, by means of which that result is effected, is of considerable importance. Machines to which it is applied are morel durable and .more nearly perfect in action than are similar machines containing clearance proof mechanism which comprises a feeler orcombthat is made to coact with register wheels by a spring constantly forcing it against them.

Various changes may be made in the details of construction and arrangement without departing from my inventlon.

Since mechanism such as that above described and called clearance proof mechanism actually testsvand indicates the state orf condition of the calculating machine as well proved, that mechanism properly maybe called condition testing and indicating mechanism and be understood to include forms of condition testing mechanism differing from that shown herein in respect both to the details of their construction and their relations to those parts of the machines which' are directly affected by their testing ,action and which may differ in diiferent machines. A,

What I claim as new and desire to secure by Letters Patent, is

1. In a calculating machine, the combination with a group of register wheels, a carriage,"and a feeler arranged to act on the group of wheels, of feeler-actuating means composed of two parts, one mounted on the carriage and transportable thereby to and yfrom the other which is mounted on the framework, and one including anangularly movable device that Vhas a linger and the lother including a guide that acts on the finger atone side thereof.

2. In a calculating machine, the combina-.

tion with a group of register wheels, a carriage, and a feelerarranged to act on the group of wheels, of feeler-actuating means composed of two parts, one mounted on the carnage and including an angula-rly movable device that has a finger, and the other mounted on the framework and including a guide 'that 'acts on thefinger at one side thereof.

3. In. a calculating machine, the combination with a traveling totalizer, and a feeler arranged to act on register wheels in the totalizer, of feeler-actuating means `comosed of two parts, one mounted in the total- 1zer and having a finger projecting from the top thereof, and the other mountedon the framework and including a guide that acts on the finger, l

4,: In a calculating machine, the combination with a traveling totalizer, and a feeler arranged to act on register wheels in' the totalizer, of I feeler-actuating means composed of two parts, one mounted on the totalizer and transportable thereby `to and from the other, which is mounted on the framework, and one including an angularly movable device that has a finger, and the other including a guidethat acts on the n- 'ger at one side thereof.

5. In a calculating machine, the combination witha traveling totalizer, and a feeler arranged to act on register wheels in the totalizer, of feeler-actuating means composed of two parts. one mounted on the totalizer and including an angularly mov-l able device that has a finger, and the other mounted on the framework and including a guide that acts on the finge-r at one side thereof.

6; In a calculating` machine, the combination with a group of register wheels, acargroup of wheels` of feeler-actuating 'means in which a part mounted on the carriage and a part mounted on the framework are included. and locking mechanism including a movable device arranged to be actuated by that part of said means which is' mounted on the carriage during a transit 'wherein said means has previously actuated the feeler. e v

7. In a calculating machine, the combinationv withl a traveling totalizer, and a feeler arranged to. act on register wheels in the totalizer, of feeler-actuating means in which a part mounted on the totalizer and a part mounted on the framework are included, and locking mechanism including a movable device arranged to be actuated by that'.

part ofsaid means which is mounted on the .totalizer during a transit wherein said means has previously actuated the feeler,

8. In a calculating and recording machine, the combination with a jumping tolll talizer. and a feeler contained in and ar^ lll riage, and a feeler arranged to act on the, 10 i ed on the framework and includes a guide that acts on the finger.

9. In a calculating and recording machine. the combination with a jumping totalizer, and a feeler contained in and arranged to act on register wheels of the totalizer` of feeler-actuating means composed of two parts, one mounted on the totalizer and transportable by it in its jumping action to ,the other, which is mounted on the framework, and one including an angularly movable device that has a finger. and the other including a guide that. acts on the nger at one side thereof.

10. In a calculating and recording machine. the combination with a jumpingr totalizer. and a feeler contained in and arranged to act on register wheels of the totalizer. of feeler actuating means composed of two parts, one including a device that has a finger and is mounted on the totalizer and the finger of which projects above the totalizer and which is transportable b v the totalizer in its jumping action to the other part. which is mounted on the framework and includes a. displaceable guide that sometimes acts on the finger to change the direction of its travel and sometimes is forced from its normal position by the finger.

11. In a calculating and recording ma.- chine. the combination with a jumping totalizer, and a feeler mounted in and arranged to act on register wheels of the totalizer. of feeler actuating means composed of two parts. one including an angularlv movable device which is mounted in and has a finger projecting from the top of the totalizer and which is transporta-ble bv the totalizer in its jumping action to the other. which is mounted on the framework and includes aguide that acts on the linger.

12. In a calculating and recording Inachine. the combination with a jumping totalizer, and a feeler mountedin and arranged to act on register wheels of the totalizer. of feeler actuating means composed of two parts, one including an angularlv movable device which has a finger and is mounted in and the finger of which projects from the top of the totalizer and which is movablebv the totalizer in its jumping action to the other part. which is mounted on the framework and includes a displaceable guide that sometimes acts on the finger to change the direction of its travel and sometimes is forced from its no1'-v mal position b v the finger.

18. In a calculating machine, the combination with a jumping totalizer and a feeler arranged to act on wheels in the totalizer,

of feeler actuating means inwhich a part mounted on the totalizer and a part mounted on the framework are included. and locking mechanism including a movable device arranged to be actuated by that part of said means which is mounted on the totalizer, during a jumping action wherein said means has previously actuated the feeler.

14. In a calculating machine. the combination with a carriage. of a device which is mounted thereon andmovable relatively thereto and in which a finger is included, and a lever which is mounted on the framework and to which are connected a cam bar and a guide that during a transit of the carriage acts on the finger, which thereafter acts on the cam bar.

15. In a calculating machine. the combinat-ion with a traveling totalizer. of a device which is mounted thereon and movable relativeljv thereto and in which a finger is included. and an angular lever which is mounted on the framework and to one arm of which is affixed a cam bar and to which is connected a guide that during backward movements of the totalizer acts on the finger which thereafter acts on the cam bar.

16. In a calculating machine, the. combination with a jumping totalizer. of a device which is mounted thereon and movable relatively thereto and in which a finger is included, and a lever which is mounted on the framework and to which are connected a cam bar and a guide that during jumping movements of the totalizer acts on the finger which thereafter acts on the cam bar.

17. In a calculating machine. the combination with a carriage, of a device which is mounted thereon and movable relativelyy thereto and in which a finger is included, and a lever which is mounted on the framework and to which are connected a cam bar and a displaceable guide that during some movements of the carriage is displaced by the finger, which during other movements is deflected by the guide and thereafter acts on the cam bar.

18. In a calculating machine, the combination with a traveling totalizer. of a device which is mounted thereon and movable relatively thereto and in which a finger is included, and a lever which is mounted on the framework and to which are connected a cam bar and a displaceable guide that during some backward movements ofthe totalizer is displaceable by the finger. which during other backward movements of the totalizer is deflected b v the guide and thereafter acts on the cam bar.

19. In a calculating machine. the combination with a jumping totalizer. of a device which is mounted thereon and movable relatively thereto and in which a finger is included, and alever which is mounted on the framework and to which are connected a cam bar and a displaceable guide that including totalizer is delected by the guide and thereafter acts on the cam bar.

20. In a calculating machine, condition testing and indicating mechanism including a lever to which are connected a cani bar and a finger-deflecting guide.

21. In a calculating machine, condition testing and indicating mechanism including a lever to which is connected a cam bar on which is mounted a finger deflecting guide that is displaceable bythe finger.

22. In a calculating machine, condition testing and indicating mechanism including va lever to which isconnected a cam bar on which is. pivot-ally mounted a finger deflecting guide that is movable on its pivot from itsrnormal position by the finger.

23. In a calculating machine, the combination with a group of register wheels, a carriage, and a eeler arranged to act on the group of wheels, of feeler actuating means composed of two parts, one mounted on t-he carriage and including a device that has an upwardly mounted on the framework and including a gude that acts on this arm near its upper en 24. In a calculating machine, the combination with a traveling totalizer, and a feeler arranged to act on register Wheels in the totalizer, of feeler actuating means composed of two parts, one mounted on the totalizer and including a device that has an arm projecting above the totalizer, and-the other mounted on the' framework and including a guide that acts on this arm.

25. In a calculating machine, the combination with a jumping totalizer, and a feeler contained in and arranged to act on register wheels of the totalizer, of feeler actuatin means composed o two parts, one

projects above the totalizer, and the other mounted on the frameworkl and including a guide that acts on this arm during a jumping action of the totalizer.

26. In a calculating and recording machine which records computed items in a plurality of zones, the combination with the recording means, of a main carria e, cross footing mechanism including a jumping carriage that makes a reciprocat-ion each time an item is recorded in any zone, a feeler arranged to act on register wheels of the cross footing mechanism, means brought. into action automaticallyas an incident to the recording of items in a predetermined zone, to press the feeler the register wheels, and clearance indicating means controlled by mechanism that includes the feeler.

27 In a calculating machine which computes groups of items both separately and all together, the combination of a set of traveling vertical totalizers, a, cross footing extending arm, and the other a device that is mounted in and els,

momentarily against totalizer that makes a reciprocation each time an iteni is registered in a vertical totalj recording` means, of a main carriage, cross footing mechanism including a jumping carriage that makes a reciprocation each time an item is recorded iii any zone, a feeler arranged to act on register wheels of the cross footing mechanism, feeler actuating means held inactive except at periods determined by the main carriage as Vit travels, mechanism in which an element that is located near the main carriage and ano-ther element that acts on and imparts motion to a part of the feeler actuating means are included, an adjustable device mounted on the main carriage and adapted to act momentarily on said first mentioned element just after items are recorded in a calculating zone predetermined by adjustment of this device, and clearance indicating means correlated to the feeler and its actuating means.

29. In a calculating machine, which computes groups of items both separately and all together, adjustably mounted traveling vertical totalizers, a cross footing totalizer that makes a reciprocation each time an item is registered in a vertical totalizer, a feeler arranged to act on register wheels of the cross totalizer, feeler actuating means held inactive except at periods determined by a specially equipped vertical totalizer as it travmechanism in which anelement that is located near the path of the vertical totalizers and a-nother element that acts on and imparts motion to a part of the feeler actuating means are included. a device attached to the specially equipped ver-tical totalizer the combination of a set of and adapted to act momentarily on said first mentioned element, just after an item is registered in that vertical totalizer, to press the feeler momentarily against the register wheels of the cross totalizer, and clearance indicating means controlled by mechanism that includes the feeler.

30. In a calculating and recording machine which records computed items in a plurality of zones, the combination. with the recording means, of a main carriage that moves step-by-step, cross footing mechanism including a cross footing carriage that also moves step-by-step with the main carriage, as an item is recorded in any 4zone, and then f' amsm, a guide and co-operating devices jumps back, a feeler arranged to act on register wheels of the cross footin meplle guide automatically moving to worling position, at the completion of each entry made in one of the zones, =to press said feeler momentarily against saidV register wheels during the succeeding 'ump of the cross footing carriage, and c earance indicating means controlled by the feeler and mechanism on which it acts.

31. In a calculatin machine, the combination with a tota izer having register wheels, actuating means therefor, and means for eiecting a relative reciprocation between said totalizer and` its actuating means once for each number entered into a calculation, of clearance proof mechanism including a feeler for said register wheels,

a linger connected with said feeler, a sprin g recording means and register wheels, of e.r

feeler yforced to act onsaid wheels when items are recorded ina predetermined zone but held inactive when items are recorded in any other zone.

33. In a calculating and recording machine which records computed items in a plurality of zones, the combination with the recordingmeans and register wheels, of a feeler forced to act on said wheels when items are recorded in a predetermined zone, but 'held inactive when items are recorded in any other zone, and clearance indicating means controlled by mechanism that includes the feeler.

34. In a calculating and recording machine which records computed items in a plurality of zones and which includes a cross totalizer, the combination with the recording means and register wheels of the cross totalizer, of a. feeler forced to act on those wheels when items are recorded inA a predetermined zone, but held inactive when items are recorded in any other zone.

Snrrn, E. M. Wma. 

